[ 2107.527620][ T9920] br0: port 1(dummy0) entered blocking state
[ 2107.527829][ T9920] br0: port 1(dummy0) entered disabled state
[ 2107.528002][ T9920] dummy0: entered allmulticast mode
[ 2107.529585][ T9920] dummy0: entered promiscuous mode
[ 2107.561617][ T9921] br0: port 1(dummy0) entered blocking state
[ 2107.562391][ T9921] br0: port 1(dummy0) entered forwarding state
[ 2109.978134][   T67] dummy0: left allmulticast mode
[ 2109.978505][   T67] dummy0: left promiscuous mode
[ 2109.979147][   T67] br0: port 1(dummy0) entered disabled state